Lexus Q&A

Had already replaced Fuel pump, replaced the ECM with a rebuilt/Repair
Tested the battery, and tested all the fuses within the Main Fuse board and the Dash Fuse board, all is well

Could not think of anything else to try.
If any suggestions would greatly appreciate the help
It has power to the car, when I trys to start it up, it will run for a few secs when you Press the gas pedal to accelerate after doing that, and when you let go the gas pedal then the car will immediately stop from running